Shipping-box.



0. MITCHELL.

SHIPPING BOX. LPPLIOATION FILED snPT.21,1911.

1,058,777. Patented Apr. 15, 1913.

r MMWQICMMMr/aq COLUMBIA PLANOURAPH COUWAIHINGTON. D. C.

UNITED sTATEs PATENT oEEICE.

OLIVER nITCHEIiI., or BOSTON, MASSACHUSETTS, AssIeNoR "ro THE IIINDE aDAUCH rArEn COMPANY, or SANDUSKY, oIIIo, A CORPORATION or oHIo.

SHIPPING-Box.

Specification of Letters Patent.

Patented Apr. 15, 1913.

To all whom it may concern Be it known that I, OLIVER MITCHELL, aCitizen of the United States, residing at Boston, in the county ofSuifolk and State of Massachusetts, have invented new and usefulImprovements in Shipping-Boxes, of which the following is aspecification.

My invention relates to shipping boxes made from three separatesections, the material of which is what is known in the paper box tradeas cellular board which is a material made by corrugating a sheet ofManila or other suitable board or paper and pasting a sheet of plainpaper upon one or both faces of the corrugated sheet to hold thecorrugations in place. Such material is strong and stiI against pressureapplied to t-he ends of the eorrugations or upon the face of thematerial across the corrugations which in eect, owing to their shape,form semi-cylindrical struts or girders to resist pressure, so that thematerial has to be crushed or torn before it will yield.-

My invention consists in so disposing the corrugations of the material of which my new box is made, that 'the maximum strength 0f the box ismanifested and Concentrated in opposition to the stress which it will becalled upon t0 endure in use'.

In the drawings: Figure l is a p erspec` tive view of the box ready tobe assembled by closing down the cover flap C and pushing the tube Aover the parts B, C. Figs. 2, 3 and 4 show the three strips of which thebox is made up, upon a reduced scale, these strips being broken away inpart to show the direction in which the corrugations of 4the materialrun.

In the drawings I have Shown a box of rectangular Shape and also theparts or Strips from which the box is made up, but it is obvious thatthe size and proportions of such a box and its parts will be varied inaccordance with the uses for which it is de` signed.

The box is made from three strips of cellular material, each of which iscreased and folded to extend to four sides of the completed rectangularbox, two of said strips being preferably joined at their ends by gummedtape in the well-known manner to form open-ended rectangular tubes andthe third strip left in strip form. One of these strips 1s creased forfolding along the direction of the corrugations which extend across thelength of the strip, the other two strips are creased for folding acrossthe corrugations which run lengthwise of the strip. The eifect of thisis that when the three parts are assembled, each part crossing the othertwo parts at right angles, as shown in the drawings, to form a six-Sideddoubled wall box, it will be found that each of four opposite sides iscomposed of two plies of material in which the corrugations are par`allel and ytwo opposite sides which may be considered the top and bottomwill have the corrugations of the two plies of material crossed. Thismethod of cutting and creasing the several strips thus produces a box,in which the corrugations are disposed in the completed box in themanner best adapted to give maximum resistance to pressing strains inone direction and which are especially adapted to use in shippingarticles such as eggs, for example, which are boxed in small quantities,but shipped in quantity, one box piled upon the other. In such a casethe boxes are shipped with the four sides, in which the co-rrugations ofthe two plies are parallel, in vertical position, with the result thatthe maximum resistance to superimposed weight is provided with the bes-tdisposition also of the top and bottom plies to give cushioning effectby the crossing of their corrugations and resistance to side pressurefrom any direction.

The outer tube is marked A, its four divisions being markedrespectively, 1, 2, 3 and ai. The inner tube is marked B, its fourdivisions being marked respectively, l, 2, 3 and A. The strip is markedC, its four di visions being marked respectively, l, 2, 3 and Il. Thecrease or hinge lines are marked X and the corrugations X2. The ends ofthe two tube strips A, B, are secured to gether by gummed tape, X, toform tubes and these tubes may be pressed iiat for storage or shippingin knockdown form, the parts of the box thus iiattened forming a verycompact package. "When the box is assembled as indicated in the drawingthe Sections G2, C4 will be adjacent to sections B3, B1, theeorrugations in the adjacent sections being parallel to one another,while the sections B2, B4 will be adjacent to sections A2, A4, thecorrugations in adjacent sections being parallel to one another so thatwhen the box is filled and shipped the four sides of the box will eachpresent two plies of material each ply having its corrugationsvertically disposed. The top and bottom respectively of the assembledbox will be made up of sections A1, C1,-A3, C3, the corrugations inthese plies crossing at right angles to give the maximum cushioningeffect and resistance to side pressure from any direction.

I have described the box as made of three strips, two of which havetheir ends secured together, but it is obvious that this is notessential as a useful package would be produced if the parts wereassembled in crossed relation and then secured by stout twine or paper,or if the outer strip were secured as to its ends by gummed tape orotherwise.

l. A box comprising three strips of cellular board of uniform Widththroughout their lengths each being folded to provide three integralone-piece strips meeting at the edges of the sides of the box, securingmeans for the ends of two of the strips, said folded strips beingtelescoped to provide a box with six sides of double thickness, thestrip with free ends being innermost and having its free side locked inposition by the outer folded strip.

2. A box comprising a strip of cellular board formed to provide anintegral onepiece top, a one-piece bottom and one-piece sides, the striphaving its ends free and meeting at the abutting edges of the top andthe side of the box a second cellular board strip folded about the firststrip to provide integral one-piece sides and ends and admitting of theupward swinging of said top, the ends of said second strip meeting atthe abutting edges of one of the sides and one of the ends and beingpermanently secured together, and a. third strip folded about said firstand second strips to provide an outer one-piece top and a one-piecebottom, and outer one-piece ends, the extremities of the third stripmeeting at the abutting edges of one of the ends and the top and beingpermanently secured together whereby the outer top holds said first topclosed.

3. A box comprising a strip of cellular board folded to provide anintegral top, bottom and sides and having its ends meeting at the topedge of the box, a second cellular board strip folded about the firststrip to provide integral sides and ends and admitting of the upwardswinging of said top, the ends of said second strip being permanentlysecured together, and a third strip folded about the first and secondstrips to provide an outer top and bottom and outer ends, theextremities of the third strip being permanently secured togetherwhereby the outer top locks said first top closed.

In testimony whereof, I have hereunto subscribed my name this 19th dayof September, 1911.

OLIVER MITCHELL.

Witnesses HAROLD EvERET'r Unsnrrfr, ANNA B. LINDSAY.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents. i Washington, D. C.

